Portable computer docking station



FIG. 1 is a top, front, right side, perspective view of a portable computer docking station showing our new design; a portable computer and its associated, detachable keyboard are shown in broken lines for illustrative purposes only and do not form a part of the claimed design;

FIG. 2 is a top, front, right side perspective view thereof without the portable computer;

FIG. 3 is a front elevation thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation thereof;

FIG. 7 is a left side elevation thereof; and,

FIG. 8 is a rear elevation thereof. 

The ornamental design for the portable computer docking station, as shown and described. 